customer.io

Customer.io is a customer engagement platform for sending automated, data-driven messages across channels like email, SMS, push, in-app, WhatsApp, and webhooks. It also includes customer data pipeline capabilities and AI features for working with campaigns and workspace data.

5 integrations · MCP · REST · CLI

Customer.io exposes three documented HTTP APIs (Track, App, and Pipelines), an MCP server for AI tools, and a `cio` CLI.

discovered 2mo ago

MCP servers1

Customer.io MCP serverdiscoveredstreamable-http

REST · OpenAPI3

Customer.io Track APIdiscoveredrest
Customer.io App APIdiscoveredrest
Customer.io Pipelines APIdiscoveredrest

CLI1

Customer.io CLIdiscoveredcio

Credentials

Track API site ID and API keybasicGet credentials ↗

In Customer.io, go to Account Settings → API Credentials. Create or copy your Track API credentials: a site ID and a Track API key. These are used together for Track API authentication.

App API keybearerGet token ↗

In Customer.io, go to Account Settings → API Credentials. Create or copy an App API key. Customer.io docs note that the App API uses bearer authorization, and transactional API setup pages direct you to create the App API key there.

Customer.io CLI login sessionoauth2$ cio login

Acquired by the CLI — running cio login opens the auth flow and stores the credential.

conventions · 3/7 published

integrations.json——
llms.txt✓https://customer.io/llms.txt
API catalog✓https://customer.io/.well-known/api-catalog
OpenAPI document✗/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json
MCP server card✗/.well-known/mcp/server-card.json
OAuth protected resource✗/.well-known/oauth-protected-resource
Agent card✗/.well-known/agent-card.json
Agent skills✓https://customer.io/.well-known/agent-skills/index.json

Publish these signals → /publishing